Homework Help: ap Physics

Posted by jeff on Saturday, February 26, 2011 at 9:43pm.

1.
a)A 15.6 kg block is dragged over a rough, horizontal surface by a constant force of 72.2 N acting at an angle of angle 34.8 above the horizontal. The block is displaced 24.6 m and the coefficient of kinetic friction is 0.234.Find the work done by the 72.2 N force.The acceleration of gravity is 9.8 m/s2 .
Answer in units of J.

b)Find the magnitude of the work done by the force of friction.
Answer in units of J.

c)What is the sign of the work done by the frictional force?
1. negative
2. zero
3. positive

d)Find the work done by the normal force.
Answer in units of J.

e)What is the net work done on the block?
Answer in units of J.

No one has answered this question yet.

Answer this Question

Related Questions

physics - i have noo idea how to do this, please hellppppp A 15.6 kg block is ...
Physics - A 19.5 kg block is dragged over a rough, horizontal surface by a ...
Physics - A 19.5 kg block is dragged over a rough, horizontal surface by a ...
physics - A 23.1 kg block is dragged over a rough, horizontal surface by a ...
physics - A 16.3 kg block is dragged over a rough, horizontal surface by a ...
preap physics - A 15.4kg block is dragged over a rough horizontal surface by a ...
physics - Part 1 A 15.6 kg block is dragged over a rough, hor- izontal surface ...
physics - A 17 kg block is dragged over a rough, hor- izontal surface by a ...
physics - A 13.9 kg block is dragged over a rough, horizontal surface by a 70.7 ...
Physics - A 10-KG block is pulled along a rough horizontal floor by a 12-N ...

For Further Reading

First Name:
School Subject:
Answer: