Aball of weight 400 n is placed on a smooth inclined plane of inclination 30o. to a point p on its circumference an inextensible string is attached and tied to a point q on the plane. if the radius of the ball is 2m and pq = 2√3 m. determine: i. the value of the tension t in the string. ii. the normal reaction exerted by the ball on the plane.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Which composition of water moves to begin a deepwater current?