Inertia and torque of the rotating bodies

Assignment Help Physics

Reference no: EM1313388

Q1. A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2. What is the time interval required for it to reach a 4.2-rad displacement after starting from rest?

Q2. Calculate the linear speed due to the Earth's rotation for a person at the equator of the Earth. The radius of the Earth is 6.40 106 m.

74.0 m/s
465 m/s
73.0 m/s
233 m/s
357 m/s

Q4. A 3.0-m rod is pivoted about its left end. A force of 6.0 N is applied perpendicular to the rod at a distance of 1.2 m from the pivot causing a ccw torque, and a force of 5.2 N is applied at the end of the rod 3.0 m from the pivot. The 5.2 N is at an angle of 30o to the rod and causes a cw torque. What is the net torque about the pivot?

15 N•m
-6.3 N•m
-0.6 N•m
6.3 N•m
0 N•m

Q5. The quantity "moment of inertia" (in terms of the fundamental quantities of mass, length, and time) is equivalent to:

ML2T2
ML2
ML1T2
ML
ML2

Q6. A gyroscope has a moment of inertia of 0.14 kgm2 and an initial angular speed of 15 rad/s. Friction in the bearings causes its speed to reduce to zero in 30 s. What is the value of the average frictional torque?

3.3 x 10-2 N-m
8.1 x 10-2 N-m
7.0 x 10-2 N-m
6.2 x 10-2 N-m
14 x 10-2 N-m

Reference no: EM1313388

Questions Cloud

Determining evidence of difference in median performance : Is there evidence of difference in median performance between two methods? (Use α = 0.05.)

How the market for bicycles increase in the price : You had chosen to take a trip during spring break if you had not gone you would either work a temporary job or studied for exams the opportunity cost of your trip.

The distance separating moon and earth is 386000 km : An electric scooter has a battery capable of supplying 140 Wh of energy. If friction forces and other losses account for 60 percent of the energy usage, what altitude change can a rider achieve while driving in hilly terrain, if the rider and scooter..

Most current costs in the income statement : The inventory methods that result in the most current costs in the income statement and balance sheet and In a period of rising prices, the inventory method that results in the lowest income tax payment

Inertia and torque of the rotating bodies : Inertia and torque of the rotating bodies.

Median of the sample or average : Write down the probability of that the median of the sample or average medians is greater or more than 320 minutes?

Find the time required to lift the piano from street : A young woman buys a sports car that can accelerate at the rate of 5.47m/s2. She decides to test the car by drag racing with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 1.47s before Kathy. Stan ..

Calculation of net present value of a machine with salvage : Calculation of Net present value of a machine with salvage value and what is the net cost of the machine for capital budgeting purposes

Information in deciding to open a store : You used this information in deciding to open a store. Your store Explain however has not come even close to these annual sales.

User Account

All Pages