A woman of mass m = 53.3 kg sits on the left end of a seesaw—a plank of length L = 3.96 m—pivoted in the middle as shown in the figure. (a) First compute the torques on the seesaw about an axis that passes through the pivot point. Where should a man of mass M = 66.4 kg sit if the system (seesaw plus man and woman) is to be balanced?

Q: What is the magnitude of the torque about the elbow by the weight of the forearm with hand, in N·m?

A: Torque is equal to the product of force and the distance of force from the rotating axis.

Q: A heavy concrete panel is being lifted into position in a building by means of a crane (see figure…

A:

Q: A meter stick (a uniform thin rod of length 1.0 m and mass 0.30 kg) is placed on a fulcrum at the 61…

A: Let l denotes the meterstick length, m denotes the meterstick mass, r denotes the pivot distance, x…

Q: A meter stick (a uniform thin rod of length 1.0 m and mass 0.33 kg) is placed on a fulcrum at the 68…

A: Length of meter stick = 1 m mass of meter stick = 0.33 kg location of center of mass of stick = 0.5…

Q: (a) A man applies a force of F = 3.00 × 102 N at an angle of 60.0° to a door, x = 2.20 m from the…

A:

Q: A bicycle wheel can be thought of a uniform hoop with a radius of 34 cm and mass 1.9 kg. Consider…

A:

Q: The length of a bicycle pedal arm is 0.144 m, and a downward force of 141 N is applied to the pedal…

A: Torque=rFsinθ r is length of bicycle=0.144m Force=141N θ is angle between r and F θ=47.8°…

Q: A uniform door weighs 58.0 N and is 1.40 m wide and 2.60 m high. What is the magnitude of the torque…

A: Given,  Width of the door = 1.4 m height of the door = 2.6 m weight of the door = 58N we need to…

Q: A sign for a pizza restaurant hangs from a 2.60-m long rod extended out from a building. A cable,…

A:

Q: Suppose you start an antique car by exerting a force of 275 N on its crank for 0.245 s. What angular…

A: Given: Force, F = 275 N             Time, t = 0.245 s                         r = 0.3 mFind:…

Q: A tower outside the Houses of Parliament in London has a famous clock commonly referred to as Big…

A:

Q: What is the torque about your shoulder axis if you hold a 10.0 kg barbell in one hand straight out…

A:

Q: An athlete at the gym holds a 2.0 kg steel ball in his hand. His arm is 70 cm long and has a mass of…

A:

Q: (a) The fishing pole in the figure below makes an angle of 20.0° with the horizontal. What is the…

A:

Q: A box with mass 10 kg and a box with mass 15 kg are placed at the left and the right end of a…

A:

Q: (a) A boy opens a 1.05 m wide door by pushing on it with a force of 58.5 N applied at the center of…

A: Given data: Width of door = 1.05 mForce (F) = 58.5 N, at center of the door Force applied at angle…

Q: An athlete at the gym holds a 2.0 kg steel ball in his hand. His arm is 70 cm long and has a mass of…

A: Answer:-  Given  m1 = 2 kg  x1 = 70 cm = 0.7 m  m2 = 4 kg  The centre of mass of the arm is at the…

Q: Three forces are applied to a wheel of radius 0.350 m, as shown in the figure (Figure 1). One force…

A: Magnitude of net torque on the wheel due to forces is 0.3096N.mExplanation:Step 1:Step 2:

Q: A meter stick with a mass of 0.57 kg is held perpendicular to a vertical wall by a cord of length d=…

A:

Q: The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender…

A:

Q: A ball with a weight of 50 N is attached to the end of a lightweight rod at (x, y) = (4 m, 3 m),…

A: The force is F=50 N The distance at which force acts is r. r=4-02+3-02r2=4-02+3-02r2=25 m2r=5 m

Q: A meter stick with a mass of 0.57 kg is held perpendicular to a vertical wall by a cord of length d=…

A:

Q: CurrentAtemptmProgiess The figure shows a lower leg being exercised. It has a 49-N weight attached…

A:

Q: Exercise 8.3 Hints: Getting Started | I'm Stuck Suppose a 27.2 kg child sits 1.82 m to the left of…

A: Length of the see saw = L = 4.92m Mass of the first child = m1=27.2 kg Mass of the second child = m2…

Q: To tighten a bolt, you push with a force of 85 N at the end of a wrench handle that is 0.35 m from…

A:

Q: The figure shows a lower leg being exercised. It has a 49-N weight attached to the foot and is…

A:

Q: A horizontal beam of length 6 m and mass 3.0 kg has a mass of 5.0 kg and width 0.8 m sitting at the…

A: Torque due to gravity Note: subscript 1 and 2 denote block and beam respectively.…

Q: A heavy concrete panel is being lifted into position in a building by means of a crane (see figure…

A: Given : Tension =2.49 *104 N Length of  concrete panel = 49.4 m Angle with horizontal =53o…

Q: A torque of 35.3 Nm is applied to an initially motionless wheel which rotates around a fixed axis.…

A:

Q: A rod of length  is pivoted about its left end and has a force  applied perpendicular to the rod at…

A: When a force is applied perpendicularly, the angle will be 90 degrees. The torque applied due to the…

Q: Tweedledum and Tweedledee are carrying a uniform wooden board that is LLL = 3.00 mm long and has a…

A: Answer: BCE                                fig: FBD diagram of the system   Let Tweedledum and…

Q: A uniform solid disk is mounted on an axle in such a way that it is free to rotate about a…

A:

Q: When you lift an object by moving only your forearm, the main lifting muscle in your arm is the…

A:

Q: A 2 m steel rod is hinged as shown. The net torque (in N.m) exerted by the two forces on the rod…

A: It is required to find the net torque due to the forces. For this, it is required to calculate the…

Q: A uniform plank of length 5 m and weight 200 N rests horizontally on two supports with 1.1 m of the…

A:

Q: When you lift an object by moving only your forearm, the main lifting muscle in your arm is the…

A: We have given that When you lift an object by moving only your forearm, the main lifting muscle in…

Q: A student pulls with a 270.0-N force on the outer edge of a door of width w 1.53 m that pivots about…

A:

Q: A flagpole has a uniform mass density and total mass of M and length L. It is hinged at the ground…

A: Answer

Q: A horizontal beam of length 2 m and mass 8.0 kg has a mass of 5.0 kg and width 0.8 m sitting at the…

A: The data given in the system is, A. Beam a. Mass, mb=8 kg b. Length, l=2 m B. Block a. Mass of the…

Q: A person exerts a horizontal force of 42 N on the end of a door 96 cm wide. What is the magnitude of…

A: Given, force , F = 42 N width of door, d = 96cm = 0.96m Magnitude of torque = Force×distance×sinθ…

Q: A nervous diver stands at rest at the end of a 31 kg diving board as shown in the figure. If the…

A: The net torque about the lever point is due to the weight of the person and board. that is,…

Q: A woman opens a 1.50 m wide door by pushing on it with a force of 44.5 N applied at the center of…

A: Given: The width of the door: d = 1.50 m; The force applied at an angle perpendicular to the door's…

Q: Three children are sitting on a seesaw in such a way that it balances. A 20- and a 30-kg boy are on…

A: Let τ be defined as the torque, and I be defined as the moment of inertia. If α be defined as the…

Q: A metal rod 6.00 m long is held in a horizontal position. An object with mass 3.70 kg is suspended…

A: Write the given values of this problem.   m=3.7 kgd=6 m-4 m=2 m

Q: As a swimmer pulls his arm through the water, various muscles exert forces on the upper arm. The…

A: Given: The distance d is 7.10 cm or 0.071 m.            The distance D is 33.0 cm or 0.33 m.…

Q: At the presentation ceremony, a championship bowler is presented a 1.58-kg trophy which he holds at…

A: The torque is a measure of the force that can cause an object to rotate about an axis. It is what…