Physics

An object having a mass of 25 grams revolves uniformly in a horizontal circle. It is attached by a wire 75 cm long to a pin set in the surface. If the box makes two complete revolutions (1 revolution= .5 seconds) per second, find a) its speed b) tension force exerted on it by the thread i.e. centripetal force. (Convert g to kg and cm to m)

asked by Anonymous
  1. Your teacher is far too easy.

    speed=PI(2r)/period. Period is .25 seconds., r is given as .75m
    force= mass*speed^2/r

    posted by bobpursley

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A 0.700 kg object attached to the end of a 0.560 meter wire revolves uniformly on a flat, frictionless surface. a) If the object makes three complete revolutions per second, what is the force exerted by the wire on the object? b)
  2. Physics

    What weight could be supported by a rotating object if it had a mass of 98 grams and if it were revolving in a horizontal circle, 50 cm diameter, and making 240 rev/min?
  3. physics

    A mass of 8.10 kg is suspended from a 1.69 m long string. It revolves in a horizontal circle as shown in the figure. The tangential speed of the mass is 2.92 m/s. Calculate the angle between the string and the vertical.
  4. science

    Q.4a) an object is tied to a rope and moves in a horizontal circle. The maximum tension in the rope is 100N. The object has a mass of 37kg and the rope is 1.4m long. what is the angle of the rope with respect to the Horizontal? b)
  5. physics

    an object of mass m is suspended by a string of length 2m .the object is rotated in a horizontal circle show the relationship between the tension and mass and linear velocity of the body when the string make an angle to the
  6. physics

    An air puck of mass 0.33 kg is tied to a string and allowed to revolve in a circle of radius 1.12 m on a horizontal, frictionless table. The other end of the string passes through a hole in the center of the table and a mass of
  7. physics

    An air puck of mass m1 = 0.24 kg is tied to a string and allowed to revolve in a circle of radius R = 1.4 m on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a
  8. physics help please

    an air puck of mass m1= 0.25 kg is tied to a string and allowed to revolve in a circle of radius R=1.0m on a frictionless horizontal table . the other end of the string passes through a hole in the center of a table and a mass of
  9. physics

    An air puck of mass m1 = 0.24 kg is tied to a string and allowed to revolve in a circle of radius R = 1.4 m on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a
  10. physics

    An air puck of mass m1 = 0.45 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a

More Similar Questions