Homework Help: PHYSICS please HELP

Posted by DMITRIC on Wednesday, March 9, 2011 at 2:16am.

A box is lifted with a pry bar, by slipping the bar under the box and lifting up on the bar. If the pry bar is 2m in length and it is grasped at the end, and the box is located at the opposite end, the fulcrum, with its center of gravity at a distance of 0.5 m from the fulcrum.

what is the size of the force required to lift the box if the box has a weight of 100N?

CAN SOMEONE TELL ME IF I AM CORRECT?
.5 X 100 = 50Nm / 2m = 25N

PHYSICS please HELP - drwls, Wednesday, March 9, 2011 at 5:58am
0.5m * 100N = F * 2m
Solve for unknown F
F = 25 N

Right answer; bad notation.
PHYSICS please HELP - DMITRIC, Wednesday, March 9, 2011 at 8:04am
Thanks Mr. drwls for your input, but I do not follow the above notation. is * multiplication? forgive my ignorance...:(
PHYSICS please HELP - Damon, Wednesday, March 9, 2011 at 9:21am
Yes * means multiply

Answer this Question

Related Questions

PHYSICS - A box is lifted with a pry bar, by slipping the bar under the box and...
PHYSICS - A box is lifted with a pry bar, by slipping the bar under the box and ...
PHYSICS - There's a bar with length of 6.49m and mass of 5.45kg leaning ...
Physics - A bar of aluminum (bar A) is in thermal contact with a bar of iron (...
physics - Hello everyone, I need help with this question: A bartender slides a ...
math - The cost of a X chocolate bar is $3.50. The cost of a similar Y bar is $...
physics - a uniform bar of mass is supported by support pivoted at top about ...
Physics - A 60-cm-long, 500 g bar rotates in a horizontal plane on an axle that ...
Mechanics _ physics - A uniform bar 1m long is pivoted at the centre has a mass ...
Physics - A "Bus" bar is in the form of a slab of copper 2meters long...

For Further Reading

First Name:
School Subject:
Answer: