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A wet socks clinging to the inside of a washing machine drum which is spinning at a speed of
4.7 m/s. The radius of the drum is 30 cm.
(a) (Marks: 2) What is the minimum coefficient of static friction
between sock and the drum so that the sock will not slip down?
(b) (Marks: 1) At the same rotational speed and coefficient of
static friction between sock and the drum, would a sock of twice
the mass slide down the wall? Explain your answer.
(c) (Marks: 2) As the drum slows down after the washing is done
at an angular retardation of 3.25 rad/sec2
On a day when the temperature reaches 50c, what is the temperature in degrees F and in Kelvins
Velocity of 54m/s acceleration uniformly at rate of 2ms velocity reaches 72m/s
Calculate the distance travelled from the place where the acceleration began
The time taken to cover this distance
A wet socks clinging to the inside of a washing machine drum which is spinning at a speed of
4.7 m/s. The radius of the drum is 30 cm.
(a) (Marks: 2) What is the minimum coefficient of static friction
between sock and the drum so that the sock will not slip down?
(b) (Marks: 1) At the same rotational speed and coefficient of
static friction between sock and the drum, would a sock of twice
the mass slide down the wall? Explain your answer.
(c) (Marks: 2) As the drum slows down after the washing is done
at an angular retardation of 3.25 rad/sec2
. Find the time taken and
number of rotations before it stops.
If the sound intensity 4.0 m from a point sound source is 1.0 × 10⁶ Wm², what will be the sound intensity at each of the following distances from the source:
A. 1.0 m? And
B. 2.0 m?
The spring oscillates to the other end. The amplitude is 3.5m, k = 1.2, and = 4.3 . Solve the frequency, wavelength, wave speed, period, wave number, and direction.
A simple pendulum takes 23.5 seconds to complete 20 cycles. What is the perion and frequency of the pendulum?
How does the elapsed time for a process seem to be longer, an observer moving with the process or observe moving relative to the process?which observer measures proper time?explain your answer
Vehicles like cars, trucks and jeepneys have seatbelt to be used by the driver for the safe driving and seats were also have head rest. What is the importance of these safety features found in the vehicles? Apply the first law of your answer
A projectile is fired straight upward from the Earth's surface at the south pole with an initial speed equal to one third the escape speed. Ignoring air resistance, determine how far from the center of the earth the projectile travels before stopping momentarily.
