Questions
75% of the power of a car is used in accelerating it and the rest in overcoming the friction. What is the coefficient of friction if acceleration of the car is 2.45 m
detailed solution
Correct option is D
power to accelerate the car = mav and power to overcome friction μmgv given that mavμmgv=7525=31aμg=3 ⇒μ=a3g=2.453×9.8=112Talk to our academic expert!
Similar Questions
A car of mass ‘m’ is driven with acceleration ‘a’ along a straight level road against a constant external resistive force ‘R’. When the velocity of the car is ‘V’, the rate at which the engine of the car is doing work will be
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
