Explanation:
Reasons:
- to separate and
- to avoid formation of electricity.
U = 0.5k(x^2)
1.5 J = 0.5k(0.04m^2)
k = 1875 N/m
Check my math i might be wrong
Answer:
0.915 Nm
Explanation:
1 revolution = 2π rad
We can use the following equation of motion to find out the acceleration acting on the disk

where
= 0 rad/s is the initial velocity of the can when it starts from rest,
is the angular distance traveled,
is the angular acceleration of the disk, which we care looking for:


The moment of inertia of the solid disk is:

where m is the mass and R is the radius of the disk
The net torque applied is
Answer: A (smooth)
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The simplest way to do this is to set up equivalent fractions, like this-

=

Solve for x by using cross multiplication.
40*2.2= 88
1*x=88
x=88
Therefore, the boy weighs 88lbs.