(I) A 52-kg person riding a bike puts all her weight on eachpedal when climbing a hill. The pedals rotate in a circle ofradius 17 cm. (a) What is the maximum torque she exerts?(b) How could she exert more torque?

Q: (III) Suppose a 65-kg person stands at the edge of a 5.5-mdiameter merry-go-round turntable that is…

A: Given: Mass of the person = 65 Kg The diameter of the merry go round turntable = 5.5 m Moment of…

Q: 17) The moment of Inertia of a solid uniform sphere of mass m and radius R is given by the equation…

A:

Q: Calculate the torque given r= (6î + 5j)m, and F = (2î – 3j)N

A:

Q: 1) If a force of 12 N is applied tangentially to the rim of a 25-cm-radius disk-shaped wheel that…

A: Given, Tangential force = 12 N Radium of rim= 25 cm mass =2.0 Kg

Q: A wheel with a radius of 1.5 m starts from rest and accelerates under the action of a torque…

A: A) Torque = R * F  = 1.5 * 60  = 90 Nm   B) t = 10 sec w = 0 rad/sec (initial angular speed) W = 20…

Q: When is the torque at its maximum value? When is the torque having its minimum value?

A: To discuss maximum and minimum values of torque.

Q: Two equal and opposite forces each of magnitude 40N are applied to the rim of a wheel makes 12…

A: magnitude of forces are 40N . no. of revolutions 12.

Q: 11-21 A boy rides his bicycle. The wheels have radius 30.0 cm. If the boy on the bicycle accelerates…

A: Given: The radius of the wheel is 30 cm. The initial speed of the wheel is 0 m/s. The final speed of…

Q: A helicopter rotor blade can be considered a long thin rod. If each of the three rotor helicopter…

A:

Q: If a rigid body has a non-zero angular velocity, then it will have an instantaneous center of zero…

A: 2a)If we consider a rigid body, spining about an axis at constant angular velocity ω.Then velocity…

Q: A volleyball player spikes the ball. At the instant that she begins to extend her shoulder to bring…

A: Average angular acceleration is given by the formula α =ωf-ωi∆tωf=final angular velocityωi=final…

Q: b) On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance…

A:

Q: 15.7-N force is applied to a cord wrapped around a pulley of mass M = 3.63-kg and radius R = 22.5-cm…

A: This question belongs from rotational and dynamics.

Q: 12–158. An airplane is flying in a straight line with a velocity of 200 mi/h and an acceleration of…

A:

Q: Why is the third torque negative?

A: The net torque result is a negative sign. It means clockwise motion. So, that the forearm and hand…

Q: 32 53N 3. Calculate the net torque on the 2 meter long beam below about 43 (a) point C, which is the…

A:

Q: An amusement park ride (known variously as the Rotor, the Turkish Twist and the Graviton) consists…

A: Given-R=4 mμs=0.4The forces exerted on the rider, when the floor drops  away, are-(i) The normal…

Rigid Body

A rigid body is an object which does not change its shape or undergo any significant deformation due to an external force or movement. Mathematically speaking, the distance between any two points inside the body doesn't change in any situation.

Rigid Body Dynamics

Rigid bodies are defined as inelastic shapes with negligible deformation, giving them an unchanging center of mass. It is also generally assumed that the mass of a rigid body is uniformly distributed. This property of rigid bodies comes in handy when we deal with concepts like momentum, angular momentum, force and torque. The study of these properties – viz., force, torque, momentum, and angular momentum – of a rigid body, is collectively known as rigid body dynamics (RBD).