Thursday
August 28, 2014

Homework Help: PHYSICS(HELP)

Posted by Anonymous on Monday, December 9, 2013 at 10:00am.

A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m= 200 g and length l= 20 cm. Use g=10 m/s2 for the gravitational acceleration, and the ruler has a uniform mass distribution. Note that there is no friction whatsoever in this problem. (See figure)

(b) What is the force exerted by the wall on the ruler when it is at an angle θ=30∘? Express your answer as the x component Fx and the y component Fy (in Newton)

Fx=

unanswered
Fy=

unanswered
(c) At what angle θ0 will the falling ruler lose contact with the wall? (0≤θ0≤90∘; in degrees) [hint: the ruler loses contact with the wall when the force exerted by the wall on the ruler vanishes.]

θ0=

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - A ruler stands vertically against a wall. It is given a tiny impulse ...
Physics(URGENT!!!!) - A ruler stands vertically against a wall. It is given a ...
Physics Classical Mechanics - A ruler stands vertically against a wall. It is ...
PHYSICS!!! HELP - A ruler stands vertically against a wall. It is given a tiny ...
PHYSICS(HELP!!) - A ruler stands vertically against a wall. It is given a tiny ...
physics(HELP) - A ruler stands vertically against a wall. It is given a tiny ...
PHYSICS(ELENA - A ruler stands vertically against a wall. It is given a tiny ...
PHYSICS URGENT DR BOB - A ruler stands vertically against a wall. It is given a ...
Classical Mechanics Physics - A ruler stands vertically against a wall. It is ...
Physics - Please Help - A ruler stands vertically against a wall. It is given a ...

Search
Members