Posted by **sophie** on Tuesday, May 22, 2012 at 1:14am.

A small mass m hangs at rest from a vertical rope of length l that is fixed to the ceiling. A force F then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle (theta)=(theta)0 and the mass has been raised by a vertical distance h . Assume the force's magnitude F is adjusted so that the mass moves at constant speed along its curved trajectory.

Find the work done by during this process. [Hint: When the angle is increased by d(theta) (in radians), the mass moves along an arc length ds=ld(theta)

- physics -
**Elena**, Tuesday, May 22, 2012 at 4:53am
W=mgh =mgL(1-cosφ)

## Answer This Question

## Related Questions

- physics - small mass hangs at rest from a vertical rope of length that is ...
- physics Q - can you please help me with this please. thank you. A small mass m ...
- physics please HELP ! - can you please help me with this please. thank you. A ...
- physics - A gymnast of mass 61.0 kg hangs from a vertical rope attached to the ...
- kjkj - A gymnast of mass 56.0kg hangs from a vertical rope attached to the ...
- physics - A gymnast of mass 63.0 {\rm kg} hangs from a vertical rope attached to...
- physic - A gymnast of mass 68.0 {\rm kg} hangs from a vertical rope attached to ...
- science - In the system shown in the figure , block A has mass m_A = 2.08 kg, ...
- Physics - A 14.9-kg object hangs in equilibrium at the end of a rope (taken as ...
- physics - A block of mass M hangs from a uniform rope of length L and mass m . ...

More Related Questions