Question
Refer to Problems $11-14 .$ Find the final speed of the sliding crate if the frictional force on the sliding crate has magnitude $19.4 \mathrm{N}$.
Step 1
The total energy of the system (kinetic energy + potential energy) before the block starts sliding is equal to the total energy of the system after the block has slid down the incline, minus the work done by friction. Show more…
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Refer to Problems $11-14 .$ Find the final speed of the sliding crate if the incline is frictionless.
In Problem $10,$ find the acceleration of the crate if the applied force is $330 \mathrm{N}$ and the coefficient of kinetic friction is $0.45 .$
(II) A $110-\mathrm{kg}$ crate, starting from rest, is pulled across a floor with a constant horizontal force of 350 $\mathrm{N}$ . For the first 15 $\mathrm{m}$ the floor is frictionless, and for the next 15 $\mathrm{m}$ the coefficient of friction is $0.30 .$ What is the final speed of the crate?
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