Q. 194.3( 7 Votes )
The bob of a simple pendulum of length 1 m has mass 100g and a speed of 1.4 m/s at the lowest point in its path. Find the tension in the string at this moment.
According to the question;
Length of pendulum (l) = 1 m;
Mass of pendulum (m) = 100g =
Velocity at lowest point (v) = 1.4 m/s.
The Tension in the string is equal to the sum of force in the circular path (centripetal force) and gravitational force..
⇒ Tension T = Centripetal force + gravitational force.
⇒ T = + mg
⇒ T = + 0.1 × 9.8.
(Length of string(l) = radius of circle in which bob of pendulum moves (r))
⇒ T = 0.196 + 0.98
⇒ T = 1.176 N.
The tension in the string is 1.176 N.
Rate this question :
The bob of a simple pendulum of length 1 m has mass 100g and a speed of 1.4 m/s at the lowest point in its path. Find the tension in the string at this moment.AP - Physics & Chemistry
What path will the moon take when the gravitational interaction between the moon and earth disappears?AP - Physics & Chemistry
Two cars having masses m1 and m2 move in circles of radii r1 and r2 respectively. If they complete the circle in equal time. What is the ratio of their speeds and centripetal accelerations?AP - Physics & Chemistry
A scooter weighing 150kg together with its rider moving at 36 km/hr is to take a turn of radius 30 m. What force on the scooter towards the center is needed to make the turn possible? Who or what provides this?AP - Physics & Chemistry
Why is it easier to carry the same amount of water in two buckets, one in each hand rather than in a single bucket?AP - Physics & Chemistry
Explain why a long pole is more beneficial to the tight rope walker if the pole has slight bending.AP - Physics & Chemistry
A small metal washer is placed on the top of a hemisphere of radius R. What minimum horizontal velocity should be imparted to the washer to detach it from the hemisphere at the initial point of motion? (See figure)
AP - Physics & Chemistry
A car moves with constant speed of 10 m/s in a circular path of radius 10m. The mass of the car is 1000 kg. Who or what is providing the required centripetal force for the car? How much is it?AP - Physics & Chemistry