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Question 1: Differentiate fixed and movable pulley.
Question 2: What is the mechanical advantage of a movable pulley, in which the load is directly attached to two segments of rope ?
Question 3: Is a screw with fewer or more threads per centimeter is easier to drive into a piece of wood ? Explain.
Question 4: Fixed pulleys are not able to multiply input force, then what is the use of fixed pulley ?
Question 5: Explain any two cases where you see pulleys in your daily life.
a car passes a stationary cop at 35 m/s. at that instant, he presses his brakes, slowing at a rate of 1.5 m/s2. The cop takes 2 sec. to put down his gear to pursue, How far did the cop travel to catch up
The membrane that surrounds a certain type of living cell has a surface area of 4.4 x 10-9 m2, The potential on the outer surface of the membrane is +52.2 mV greater than that on the inside surface. How much charge resides on the outer surface
The magnitude of the electric field of an electromagnetic wave increases from 315 to 935 N/C. (a) Determine thewave intensities for the two balues of the electric field.(b) What is tthe magnitude of the magnetic fieldassociated with each electric ..
200 ml of coffee ( density = 1000kg/m^3 , specific heat 4186j/kg C ) is insulated in a mug at a temp of 85C. If 25ml of cream ( density of 1500 kg/ m^3 , specific heat 4500j / kg C at 10 C is added what will be the new temperature of the system?
The radius of curvature of the road is R, the banking angle is ?, and the coefficient of static friction is ?s. Determine the range of speeds the car can have without slipping up or down the road
A wheel starts from rest and rotates about its axis with constant angular acceleration. After 7.4 seconds have elapsed, it has rotated through an angle of 23 radians. What is the angular velocity when t=7.4 seconds?
if the radius of a blood vessel is reduced by cholesterol deposits to 90 of its original value flow will decrease. by
A 500 gram mass is used as a pendulum bob so that itforms a pendulum that is 2.0000 metres long. How high is the pendulum bob above its originalposition?Draw a digram in which variables are clearly illustrated
A 500 \mu F capacitor is connected across a 1.25 H inductor. At a certain time, the charge on the capacitor is zero and the current is 0.347 A. What is the peak charge on the capacitor
the displacement in meters of an object moving in a straight line is given by s 1 2t t24 where is measured in
The sun radiates energy at a rate of 3.86*10^26 W. Its radius is 7.0*10^8m. what is the intensity of solar radiation at the top of the earths atmosphere
An electromagnetic velocity filter (sometimes called a Wien filter) is used in a variety of experiments and other applications, such as electron microscopes, in which we need a beam of charged particles all going at the same speed. Generally the s..
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