Recent content by adadadad

thanks! But where is that 'rough sketch' ??

Thanks a lot Sir.! I've another question. It is about kinetic friction acting on a body. We all know, kinetic friction of a body is usually smaller than its static friction. (1) If we increase the speed of the body, what happens to its kinetic friction ? Does it increase, decrease, or remains...

Sir, I'm not talking of the circular motion. The body is traveling in a straight line with some speed. Ofcouse, kinetic friction is opposing the motion of the boday. And this is what i can't understand :- (1) If we increase the speed of the body, what happens to its kinetic friction ? Does it...

now this is clear to me for sure. Thanks a lot! I've another question. It is about kinetic friction acting on a body. We all know, kinetic friction of a body is usually smaller than its static friction. (1) If we increase the speed of the body, what happens to its kinetic friction ? Does it...

I couldn't understand. Will you make it clear, how the resultant friction will be 'behind the radius' and 'in front of it' when the car slows down and speeds up respectively??

[REPLY] the instantaneous velocity of the car at a point in along the tangent. Ofcourse, friction is acting inwards i.e along the radius. Is it right to say that at an instant, friction is acting perpendicular to the direction of motion?

Thanks a lot Sir for all those answers.. That really helped. Now, it is clear to me. If only, I've any doubts, may i post my questions ??

[REPLY] Thank you Sir for very quick help. You said, ''the net friction in this case is zero.'' But these forces (i.e friction at the axles in the engine and the air friction in the opposite direction) must be acting on the car in the first case also (when the car is accelerating). Hence, the...

Direction of force acting on a body in uniform circular motion?? Hello Sir/Ma'am I'm a a novice. I joined this forum to clear my doubts and improve my physics. Here is my question.. " We generally say, frictional force always acts in a direction, opposite to the direction of motion of a body...