Wednesday
July 30, 2014

Homework Help: Physics- Mechanics

Posted by Genevieve on Friday, September 24, 2010 at 4:55pm.

A 33.5 kg person stands on a 67 kg platform.
He pulls on the rope that is attached to the
platform via the frictionless lower-right pul-
ley. He pulls the rope at an angle of 35◦ to the
horizontal, as shown in the figure below.
Assume: g = 9.8 m/s2 . Ignore friction.
The platform remains level.


(a) If he pulls the platform up at a steady rate,
how much force is he pulling on the rope?
(b) In Part 1 we assumed that the platform re-
mains level. This is a bad assumption.
However, if the man were pulling straight
up on the rope, the forces will be balanced
and the platform should remain level.
1. This is a good assumption.
2. Cannot be determined.
3. This also is a bad assumption.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - A 70 kg person stands on a 30 kg platform and pulls on a massless rope...
Physics - A 59-kg housepainter stands on a 16-kg aluminum platform. The platform...
Physics - A person of mass 55 kg stands at the center of a rotating merry-go-...
Physics - A 3.0m wooden platform is suspended from the roof of a house by ropes ...
physics - A person of mass 84.5 kg is initially at rest on the edge of a large ...
Physics - A house painter is standing on a uniform, horizontal platform that is ...
physics - A painter of mass 90.0 kg stands on a platform of mass 50.0 kg and ...
physics - A 4-m wooden platform weighing 160 N is suspended from the roof of a ...
physics - on an exam i had to day this was the question:A painter of mass 50.0 ...
physics - A child of mass 40 kg stands beside a circular platform of mass 90 kg ...

Search
Members