A record turntable is rotating at 33 rev/min. A watermelon seed is on the turntable 9.6 cm from the axis of rotation. (a) Calculate the acceleration of the seed, assuming that it does not slip. (b) What is the minimum value of the coefficient of static friction between the seed and the turntable if the seed is not to slip

(A) Acceleration will be

(B) Coefficient of static friction will be 0.116

Explanation:

We have given angular speed

Distance from the axis r = 9.6 cm = 0.096 m

(a) Acceleration is equal to

(b) For seed is not to slip

So coefficient of static friction will be 0.116

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg