What is the value of the poential energy of the object when

Assignment Help Physics

Reference no: EM13630427

Q1. An object of mass 8.5kg is lifted from the floor to a height of 0.5m at a constant speed.

a) What is the net force acting on the mass?

b) What is the magnitude of the lifting force?

c) How much work is done by the lifting force?

d) How much work is done by the net force?

e) What is the value of the poential energy of the object when it is 0.5m above the floor?

Q2. After the object has been lifted 0.5m, it is released from rest and is allowed to fall freely to the floor.

a) How much work does the gravitational force do on it during the fall?

b) How much potential energy does it lose during its fall?

c) What is its kinetic energy just before it hits the floor?

d) What is its velocity just before it hits the floor?

e) What is its velocity when it has fallen halfway to the floor?

Q3. Suppose that the object is dropped from the same height, but is attached to a parachute.

a) Will the kinetic energy just before it hits the floor be the same, large or smaller than it was? Explain your answer.

b) Is mechanical energy conserved in this case?

Reference no: EM13630427

Questions Cloud

Find the size of the sample required to estimate the mean : suppose that the minimum and maximum ages for typical textbooks currently used in college courses are 2 and 8 years.

A study of 35 apple trees showed that the average number of : a study of 35 apple trees showed that the average number of apples per tree was 525. the standard deviation of the

A wire is formed into a circle having a diameter of 150 cm : a wire is formed into a circle having a diameter of 15.0 cm and placed in a uniform magnetic field of 2.90 mt. the wire

An analyst from an energy research institute in california : an analyst from an energy research institute in california wishes to precisely estimate a 99 confidence interval of the

What is the value of the poential energy of the object when : q1. an object of mass 8.5kg is lifted from the floor to a height of 0.5m at a constant speed.a what is the net force

If electricity costs 85 cents per kwh determine the actual : a heat pump with a coefficient of performance of 3.5 provides energy at an average rate of 70000 kjh to maintain a

Design a compound gear train that yields a train value of : design a compound gear train that yields a train value of 3001. from interference considerations no pinion shouicl have

Suppose a committee of 3 people is to be selected randomly : suppose a committee of 3 people is to be selected randomly from a group consisting of 4 men and 5 women. what is the

Tarzan swings on a vine from a cliff to rescue jane who is : tarzan swings on a vine from a cliff to rescue jane who is standing on the ground surrounded by snakes. his plan is to

User Account

All Pages