# physics

a 21.2 kg mass attached to a spring scale rests on a smooth, horizontal surface. the spring scale, attached to the front end of a boxcar, reads T=35.6N when the car is in motion. If the spring scale reads zero when the car is at rest, determine the acceleration of the car, when it is in motion as indicated above

1. 👍
2. 👎
3. 👁
1. a=F/m = 35.6/21.2=1.68 m/s²

1. 👍
2. 👎

## Similar Questions

1. ### Physics

A 4.07 x 10-2-kg block is resting on a horizontal frictionless surface and is attached to a horizontal spring whose spring constant is 144 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 10.5

2. ### physics

a 0.75 kg mass attached to avertical spring streches the spring 0.30m. what is the spring constant? the mass-spring system is now placed on the horizontal surface and set vibrating. what is the period of the vibration?

3. ### Physics

A spring oriented vertically is attached to a hard horizontal surface as in the figure below. The spring has a force constant of 1.64 kN/m. How much is the spring compressed when a object of mass m = 2.35 kg is placed on top of

4. ### Physics

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The

1. ### physics

a rifle bullet of mass 8.0g strikes and embeds itself in a block of mass 0.992kg that rests on a frictionless horizontal surface and is attached to a coil spring. the impact compresses the spring 15.0cm. calibration of the spring

2. ### Physics Spring

A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 1.0 J of work is required to compress the spring by 0.12 m. If the mass is released from rest with the

3. ### physics

In Figure (a), a block of mass m lies on a horizontal frictionless surface and is attached to one end of a horizontal spring (spring constant k) whose other end is fixed. The block is initially at rest at the position where the

4. ### physics

A 400-gram package lying on a horizontal surface is attached to a horizontal string which passes over a smooth pulley. When a mass of 200 grams is attached to the other end of the string, the package is on the point of moving.

1. ### Physics Help!

A 2.2 kg mass is attached to a spring with a force constant of 560 N/m on a smooth horizontal surface. The mass is pulled to one side, released, and allowed to oscillate back and forth. (a) find the maximum compression and

2. ### Physics

A 0.473 kg mass is attached to a spring with a spring constant 110 N/m so that the mass is allowed to move on a horizontal frictionless surface. The mass is released from rest when the spring is compressed 0.119 m. Find the

3. ### Physics

A 0.409 kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 19.5 N/m. The block rests on a frictionless surface. A 0.0500 kg wad of putty is thrown horizontally at the block,

4. ### Physics

A 2.50 mass is pushed against a horizontal spring of force constant 26.0 on a frictionless air table. The spring is attached to the tabletop, and the mass is not attached to the spring in any way. When the spring has been