In practice, there may be a systematic error in this experiment because of Page 14 of 51
THE E
friction in the pulleys.
When the measurements were taken, increasing values of m were used. State
and explain how friction in the pulleys would have affected the measured
values of y.
(2)
(Total 13 marks)
P!​

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 3.2 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 12.9-kg slen

Which number has five significant figures? a. 52,000 b. 8.002 c. 6.0000 d. 0.2350