Princess Nourah University Compute the Radius of Curvature Physics Questions Please see the attached pictures Make sure you explain the solutions as much a

Princess Nourah University Compute the Radius of Curvature Physics Questions Please see the attached pictures Make sure you explain the solutions as much as you can 6
(3) A cart (m= 4 kg) moves in the x-direction. The x-component of the net force acting on the cart is
shown in the graph below.
m
оо
x
F (N)
10
5
0
xm
-5
-10
(a) (10 points) What is the cart’s speed at x = 8 m if it starts from rest at x = 0?
(b) (5 points) What was the cart’s maximum speed?
(c) (5 points) What would be the cart’s speed at x = 8 m if its initial velocity (at x = 0) was 5 m/s?
7
(4) A small block (mass = m) is released from rest from the top of a U-shaped track. The two curved
sections are frictionless, but the flat section (between A and B) has a coefficient of kinetic friction
H = 0.40. Each curved section has a radius of curvature R = 3.00 m, and the flat section is 2.00 m
long. How far from point A will the block come to rest? (Hint: Use Wrc = AE.)
m
R
A
H = 0.40
B

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