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I have an experiment about computing the coefficient static friction of an object on an inclined plane. I had a piece of flat wood as the plane, and a plastic prism as the object. We were instructed to slowly incline the plane, and once the object starts moving, we should stop raising the plane. In my understanding, slowly inclining the plane will provide a more accurate maximum height of the inclined plane as the object finally moves down and exceeds the limit of its static friction. What will happen if I suddenly incline the plane? Will I yield the same result as inclining the plane slowly and what is/are the principle/s behind it?
Physics
A 64kg person stands in an elevator. Find the weight of the person and the normal force between the person and the elevator for each of the following situations.
a. When the elevator is traveling downward at a constant speed of 12.4m/s.
Weight =
Normal Force =
b. When the elevator is accelerating upward at 2.4m/s2
Weight =
Normal Force =
c. The elevator cable is cut, and the elevator goes into freefall.
Weight =
Normal Force =
a. When the elevator is traveling downward at a constant speed of 12.4m/s.
Weight =
Normal Force =
b. When the elevator is accelerating upward at 2.4m/s2
Weight =
Normal Force =
c. The elevator cable is cut, and the elevator goes into freefall.
Weight =
Normal Force =
Physics
A 0.79-kg ball is placed on top of a 2.5-kg book which is at the top of a table. What is the magnitude of the force exerted by the table to the two objects?
Physics
An 11.7kg block resting on a frictionless, level surface, is pulled with a force of 30N acting at an angle of 30deg above the horizontal axis.
a. Calculate the magnitude of the net force on the block in the x axis.
b. Calculate the magnitude of the net force on the block in the y axis.
c. Calculate the magnitude of the weight of the block.
d. The normal force is _______ the weight of the block.
e. Calculate the magnitude of the Normal Force between the block and the ground.
f. Calculate the magnitude of the horizontal acceleration of the block.
a. Calculate the magnitude of the net force on the block in the x axis.
b. Calculate the magnitude of the net force on the block in the y axis.
c. Calculate the magnitude of the weight of the block.
d. The normal force is _______ the weight of the block.
e. Calculate the magnitude of the Normal Force between the block and the ground.
f. Calculate the magnitude of the horizontal acceleration of the block.
Physics
Aroldis Chapman posses a 47.7 m/s fastball. If he threw a baseball straight up into the air, how long will the baseball stay in the air?
Physics
Two students sit on a seesaw, one student, on the right side of the seesaw, is at 150cm away from the pivot and exerts a force of 320N. The other student is on the opposite side at 120cm and exerts a force of 400N. which side is closer to the ground?
Physics
A charged object, such as the dome of a Van de Graaff generator, is discharged by momentarily touching it
with an earth wire. Draw diagrams of the charge and fields involved, and explain what is going on here.
with an earth wire. Draw diagrams of the charge and fields involved, and explain what is going on here.
Whether the work is performed by the weight acting on a vase standing on the table, why?
Lift 100g and 1kg weights to a height of 1 m above the table. You will do 1J and 10J work. Explain how it was calculated.
A cumin canister of mass m=0.4kg slides across a horizontal frictionless counter with
speed v=0.5m/s. It then runs into and compresses a spring of spring constant k=
750N/m. When the canister is momentarily stopped by the spring, by what distance d
is the spring compressed
speed v=0.5m/s. It then runs into and compresses a spring of spring constant k=
750N/m. When the canister is momentarily stopped by the spring, by what distance d
is the spring compressed
