You push a 2 kg block along a straight frictionless surface with a constant force. Starting from rest the block reaches a final speed of 2 m/s in 10 m. What is the instantaneous power (in W) that you are supplying 2 seconds after you start pushing...

A 19 kg block is dragged over a rough, horizontal surface by a constant force of 126 N acting at an angle of angle 26.2 above the horizontal. The block is displaced 80.6 m and the coefficient of kinetic friction is 0.223.

Two masses are attached to a frictionless, massless pulley. The mass of block A is 5.0 kg, and the mass of block B is 2.0 kg. What is the acceleration of the system when the blocks are released? Although I know this would not be the case, my ...

2.0 kg block accelerating down the plane at 2.0m/s^2 30 degree incline with constant velocity

When a 4.80 kg object is hung vertically on a certain light spring that obeys Hooke's law, the spring stretches 2.00 cm. 1. If the 4.80 kg object is removed, how far will the spring stretch if a 1.50 kg block is hung on it? 2. How much ...

block. Determine (a) the acceleration given this system, (b) the tension in the cord connecting the 3.0 kg and the 1.0 kg blocks, and (c) the force exerted by the 1.0 kg block on the 2.0 kg block.

Initially sliding with a speed of 2.1 m/s, a 2.0 kg block collides with a spring and compresses it 0.41 m before coming to rest. What is the force constant of the spring? I'm not sure if I use F=-kx or w=-1/2k(delta x squared) ...

A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 28 degree angle. The block's initial speed is 15 m/s. The coefficient of kinetic friction of wood on wood is u=0.200 What vertical height does the block reach above its...

http://img255.imageshack.us/my.php?image=p427altuz9.gif Assume that the three blocks portrayed in Figure P4.27 move on a frictionless surface and that a F = 48 N force acts as shown on the m = 2.5 kg block. I cant figure out how to get this...

A 3.33 kg block slides down a smooth, fric- tionless plane having an inclination of 23◦ . The acceleration of gravity is 9.8 m/s2 . What is the block’s speed when, starting from rest, it has traveled a distance of 3.35 m along the ...

A 2.00 kg frictionless block is attached to an ideal spring with force constant 312 N/m. Initially the block has velocity -3.58 m/s and displacement 0.200 m. What is the amplitude? What is the maximum acceleration of the block? What is the ...

A 1.2 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive direction of an x axis is applied to the block. The force is given by F(x) = (2.8 - x2)i N, where x is in meters and the initial ...

A 6.4 kg block rests on a 12.5kg block. The interface between the lower mass and the table is frictionless but there is frictions (static and kinetic) between the two blocks. A horizontal force (F) acts on the upper block and causes both blocks to...

Blocks of mass m1 = 2.0 kg and m2 = 7.0 kg are placed on a frictionless inclined plane of angle θ = 36.0° as shown in the figure. A force of magnitude F = 157.0 N that is parallel to the surface of the ramp is applied to the block of mass m1. ...

what is the minimum and maximum angle where you have no acceleration when friction is 0.2 and the applied force is 25N on a 5 kg block?

Two objects are connected by a string of length 3.32 m and negligible mass. the 10 k block is placed on a smooth table top and the 6 kg block hangs over the edge of the table. The 6 kg block is released from rest at a distance of .83 m above the ...

The coefficient of kinetic friction between the 2.0 kg block in figure and the table is 0.330. The three masses are arranged as follows: Mass 1 = 1 kg Mass 2 =2 kg mass 3 = 3 kg M1 hangs off the left side of the table M2 sits on the ...

Suppose a horizontal force of 0.7N is required to pull a 5kg block across a table at constant speed. A 20g bullet hits the block and imbeds itself into the block upon impact. After the bullet hits the block, the block/bullet combo slides 1.5 ...

A block of mass 1.37 kg is kept at rest as it compresses a horizontal massless spring (k = 84.7 N/m) by 6.27 cm. As the block is released, it travels 0.502 m on a rough horizontal surface before stopping. The acceleration of gravity is 9.8 m/s^...

a wheel of radius 0.20 m is mounted on a frictionless horizontal axle. A massless cord is wrapped around the wheel and attached to a 2.0 kg box that slides on a frictionless surface inclined at angle θ = 15° with the horizontal. The box ...

A 0.5 kg wooden block is placed on top of a 1.0 kg wooden block. The coefficient of static friction between the two blocks is 0.35. The coefficient of kinetic friction between the lower block and the level table is 0.20m. What is the maximum ...

A 14 kg block slides down a frictionless slope which is at angle θ = 23 ◦. Starting from rest, the time to slide down is t = 1.49 s. The acceleration of gravity is 9.8 m/s^2. a) What total distance s did the block slide? Answer in units of m...

In Case A the mass of each block is 4.6 kg. In Case B the mass of block 1 (the block behind) is 9.2 kg, and the mass of block 2 is 4.6 kg. No frictional force acts on block 1 in either Case A or Case B. However, a kinetic frictional force of 9.0 N...

The equilibrium position of the mass is defined to be at x=0. Somebody pushes the mass to the position x= 0.350 m, then lets go. The mass undergoes simple harmonic motion with a period of 4.00 s. What is the position of the mass 3.400 s after the ...

Body A has mass of 12.0 kg and the coefficients of friction between it and the incline are 0.45 and 0.25. the angle. theata. is 50 degrees. assume that mass A is intended to move up the incline, a) if mass B is 12.0 kg, determine if the system ...

Blocks with masses of m1= 1.0 kg and m2 = 2.0 kg are connected by a string, supported on a frictionless table, and connected by a string and pulley to a hanging block with a mass m3 = 3.0 kg, as shown, and released from rest. Newton's ...

a 10 kg block is at rests on a smooth horizontal surface. if it is acted upon by a constant horizontal force of 80N for 4 seconds, find the kinetic energy of the block. ..can you please answer this...please... help!!!!! uhhmm what does "...

The 1.0 kg block in the figure is tied to the wall with a rope. It sits on top of the 2.0 kg block. The lower block is pulled to the right with a tension force of 20 N. The coefficient of kinetic friction at both the lower and upper surfaces of ...

A horizontal spring with spring constant 150 N/m is compressed 15 cm and used to launch a 2.8 kg box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of kinetic friction of ...

So is tension across a hanging rope the same or not? In one problem, which shows 2 1.0kg blocks connected by a rope. A second rope hangs beneath the lower block. Both ropes have a mass of 250g. The entire assembly is accelerated upward at 3.0 m/s...