# physicss

The question states:

A 5.2 kg box is on a frictionless 36 degree slope and is connected via a massless string over a massless, frictionless pulley to a hanging 2.1 kg weight. What is the tension in the string if the 5.2 kg box is held in place, so that it cannot move?

I summed the forces in the x direction for the 5.2 kg block:

F(net)= T - Mg sin(36)=0

and the forces in the y for the 2.1 block

F(net) = T - mg = 0

solving for T in the 1st equation gives me T=29 while solving for T in the other gives me 20.5 which is the answer. Why didn't the both give me the same T?

1. 👍 0
2. 👎 0
3. 👁 235

## Similar Questions

1. ### physics

A 5.2 kg box is on a frictionless 36 degree slope and is connected via a mass less string over a mass less, frictionless pulley to a hanging 2.1 kg weight. What is the tension in the string if the 5.2 kg box is held in place, so

asked by Taylor on October 10, 2010
2. ### physics

A box whose mass is 20 kg rests on a frictionless ramp with a 15 degree (upward) slope. A mover pulls up on a rope attached to the box to pull it up the incline. If the rope makes an angle of 40 degree with the horizontal, what

asked by David S. on November 11, 2006
3. ### physics

a box with mass 20kg rests on a frictionless ramp with a 15degree slope. a mover pulls up on a rope attached to the box to pull it up the incline. if the rope makes a 40 degree angle with the horizontal, what's the smallest force

asked by thalia on November 11, 2009
4. ### Physics

A 6.0kg box is on a frictionless 45∘ slope and is connected via a massless string over a massless, frictionless pulley to a hanging 2.4kg weight. What is the tension in the string if the 6.0kg box is held in place, so that it

asked by Physics Help on May 16, 2014
5. ### Physics 11 steve or any physics teacher helpURGENT

A 30kg student pushes a 20kg box on a frictionless surface. If student accelerates at 0.80 m/s^2, what is acceleration of the box. My question is why does the box accelerate in opposite direction of the boy, and how does the

asked by Brayden Hugo on October 30, 2016
6. ### physics

A horizontal force of magnitude F = 110 N is used to push a box of mass m = 6 kg from rest a distance d = 16 m up a frictionless incline with a slope q = 28°. a) How much work is done by the force on the box? b) How much work is

asked by Lyla on February 26, 2011
7. ### physical

Libby pulls a 3.9kg box to the right with a force of 200 n at a 45 degree angle relative to the horizontal along a frictionless surface. What is the acceleration of the box?

asked by Dani on November 5, 2013
8. ### Physics

Two boxes, mass 4.0 kg and 5.0 kg are set next one another on a frictionless surface. The first box is pushed with a force of 35 N. What normal forces does the second box exert on the first box during this process? (ans: 19 N) How

asked by anonymous on June 17, 2012
9. ### physics

A horizontal force of magnitude F = 176.0 N is used to push a box of mass m = 9.0 kg from rest a distance d = 15.0 m up a frictionless incline with a slope θ = 31.0°. 1) How much work is done by the force on the box? W F =

asked by Anonymous on October 9, 2012
10. ### physics

A box slides down a frictionless 35 degree incline. Determine its acceleration. If the incline is 10.0 m long and the box starts from rest, how much time does it take to get to the bottom?

asked by rick on November 6, 2016

More Similar Questions