Three part problem cant figure out the second and third parts
(part 1 of 3)
A cart loaded with bricks has a total mass
of 12.9 kg and is pulled at constant speed by
a rope. The rope is inclined at 20.6 ◦ above
the horizontal and the cart moves 25.8 m on
a horizontal floor. The coefficient of kinetic
friction between ground and cart is 0.2 .
The acceleration of gravity is 9.8 m/s2 .
What is the normal force exerted on the
cart by the floor? Answer in units of N.
(part 2 of 3)
How much work is done on the cart by the
rope? Answer in units of kJ.
(part 3 of 3)
Note: The energy change due to friction is a
loss of energy.
What is the energy change Wf due to fric-
tion? Answer in units of kJ.
2 answers
For part 3, the energy change due to friction work will equal the product if the friction force and the distance moved, 25.8 m.
Well the answer to part one was 117.5 and do you have any idea about how to do part 2
1 answer