Since the cart is moving at a constant velocity, we know that the net force acting on it is zero. Therefore, the force of kinetic friction acting on the cart is equal in magnitude and opposite in direction to the total force applied by the librarians.
The total force applied by the librarians is:
F_total = 25 N + 32 N
F_total = 57 N
Now, we can use Newton's second law to find the acceleration of the cart:
F_net = ma
0 = F_total - f_kinetic
f_kinetic = F_total
f_kinetic = 57 N
Therefore, the force of kinetic friction acting on the cart is 57 N.
Two librarians pull forward on a cart filled with books to bring them to a storage room. One librarian pulls with 25 N [forward] and the other pulls with 32 N [forward]. The total mass of the cart and books is 35 kg. The cart moves at a constant velocity.
Find the force of kinetic friction acting on the cart.
1 answer