Physics-
General
Easy
Question
A river is flowing from west to east at a speed of 5m/min. In what direction should a man on the south bank of the river capable of swimming at 10m/min, in still water should swim to cross the river in shortest time.
- East
- West
- South
- North
The correct answer is: North
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A block P of mass m is placed on a frictionless horizontal surface. Another block Q of same mass is kept on P and connected to the wall with the help of a spring of spring constant k as shown in the figure. µS is the coefficient of friction between P and Q. The blocks move together performing SHM of amplitude A. The maximum value of the friction force between P and Q is :
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