Explanation:
first is to find periodic time
12.2÷20= 0.61 s
f= 1/T
=1/0.62
=1.639Hz
here three vectors are given as
now we will find the sum of all three
so its magnitude will be
So here this resultant will be same in all three cases as it will have same figure in all cases
I think potential but im not sure
Answer:
Explanation:
Given:
angular speed of rotation of friction-less platform,
moment of inertia with extended weight,
moment of inertia with contracted weight,
<u>Now we use the law of conservation of angular momentum:</u>
The angular speed becomes faster as the mass is contracted radially near to the axis of rotation.
The answer is 5 mins. If the energy spent by a 100 W bulb for 35 min is the product of 100 X 35 which equals to 3500. With the microwave it'll take just 5 mins to consume that. (3500/700)