It depends on the type of question, mechanical condition and given values,
You can use the formula,
Coefficient of static friction = Force of Static friction / Normal force (perpendicular to contacting surfaces)
Hope this helps!
The velocity of the earth in its orbit around the sun is
Explanation
Given that the distance between sun and earth is 149500,000,000m
.
This is the radius of the nearly circular orbit of the earth around the sun.
r=149,500,000,000m=
Answer
Speed of 320 gram cart will be 0.377 m /sec
Explanation:
We have given mass of the air track
Velocity of the air track
Mass of the cart
Cart is at stationary so velocity of cart
Now according to conservation of momentum
Answer:
118.166 volt
Explanation:
We have given number of turns N =345
Sides of the rectangular coils is 12 cm =0.12 m
So area A =0.12×0.12=0.0144
Magnetic field B =0.45 T
Angular speed =505 rpm
Speed in rad/sec
The emf is given by
For maximum emf sinwt =1
So