18. A boy 60 kg hops with a horizontal velocity of 5 ms on a stationary skateboard. The skateboard weighs 4 kg. Find out the velocity when the board starts rolling? The condition given here is that any external unbalanced force is absent.
Q: 10. A body A of mass 6.6 kg which is 2 lying on a horizontal platform 4.5 m from its edge is…
A: SOlution: given that mA = 6.6 kg mB = 3.2 kg firction =1/3 to find the acceleration of the system
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Q: A participant in a "strongman" competition uses an old-fashioned device to move a large load with…
A: Mass of bucket, We need to find the magnitude of the weight of the bucket.
Q: A 4.0-kg object is attached to a vertical rod by two strings as shown in Figure P7.69. The object…
A: T1 cos 90-θ+T2 cos 90-θ=mv2rT1+T2 sinθ=mv2rT1+T2=mv2r sinθ→ 1Now from vertical…
Q: Consider a balanced seesaw. The balanced seesaw consists of a girl weighing 250 N on the с. left…
A:
Q: A 6.25 g (6.25 x 10^-3 kg) quarter sits 25 cm (2.5 x 10^-1 m) from the axis of rotation on a…
A: Given data: The mass is m = 6.25 g The time is t = 1.8 s The distance from the axis of rotation is…
Q: The drawing below shows a person whose weight is W = 603 N doing push-ups. Assume L1 = 0.880 m and…
A: The free-body diagram of a person is shown below. Here, FL denotes the force on both legs and FH…
Q: 10. A mass m1 = 6.00 kg is connected by a light string that passes over a pulley of mass m3 = 6.0 kg…
A: Let tension on m1 side of string be T1, and that on m2 side be T2, acceleration be a, Force…
Q: 2 Two masses are attached to a uniform meter stick as shown in the figure below. The masses of m1…
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Q: The m = 420 gg mass in (Figure) is pushed across the 2.0-m-long cart by a 3.0 N force, starting at…
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Q: A delivery truck is carrying a 120 kg refrigerator. The refrigerator is 2.20 m tall and 85.0 cm…
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Q: “I wonder what the scale of this Mario Kart level is,” your friend says as you pass them, taking the…
A: The frictional force is, Ffr=μmgcosθ=0.775 kg9.8 m/s2cos35°=421.5 N According to newton's second…
Q: The figure below shows a uniform disk, with mass M = 4 kg and radius R = 0.2 m, mounted on a fixed…
A:
Q: A participant in a "strongman" competition uses an old-fashioned device to move a large load with…
A:
Q: 3/67 The 600-kg industrial door is a uniform rectan- gular panel which rolls along the fixed rail D…
A: Equilibrium condition will be:∑MAB=0 600g×0.15-NC×3=0NC=294.3 N
Q: A 120-kg refrigerator, 2.00 m tall and 85.0 cm wide has its center of mass at its geometrical…
A: Given:- The mass of the refrigerator is m=120 kg The dimension of the refrigerator is h = 2.0 m…
Q: Two people (a child and parent) are sitting on a teeter-totter of length L = 3 m and mass m = 10 kg.…
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Q: The figure shows an arrangement in which four disks are suspended by cords. The longer, top cord…
A: Given data F=94.9 NT1=68.7 NT2=46.9 NT3=5.51 N To calculate the masses of the four discs we have to…
Q: 2. A person is doing a sit-up (lie on their back and raise their torso up while keeping their lower…
A: SOlution: Given that mass m = 31 kg r1 = 31 cm r2 = 12 cm
Q: A construction worker is lifting a uniform beam off the floor. The beam is 2.95 meters long and…
A:
Q: 9. A mass m, = 9.50 kg is connected by a light string that passes over a pulley of mass M = 11.5 kg…
A:
Q: A 65 kg student is in a car traveling at 25 m/s on a hill of radius 110 m. When the car is at the…
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Q: 7. A meterstick with a mass of 0.15 kg is held perpendicularly to a vertical wall by a 2.7 m long…
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Q: A man stands a distance d = 0.275 m from the left end of a platform as shown in the figure. Assume…
A: Given Data- d=0.275 m L=2 m m=35 kg W=690 N T1=420.37 N T2= 770.12 N T3=322.003 N
Q: Michael Jordan has a portable basketball hoop in his driveway. He has set the basket at 8 ft (2.4 m)…
A: Write the given values with the suitable variables. h=2.4 mF=600 Nd=1.1 mm=70 kgr=1 m Here, h, F, d,…
Q: ) Calculate the time interval required for m1 to hit the floor (in second). b) Calculate the time…
A: The given that: The mass: m1 = 30.0 kg, m2 = 13.4 kg, The radius is R = 0.300 m The mass of the…
Q: A hand-held shopping basket 62.0 cm long has a 1.86 kg carton of milk at one end, and a 0.722 kg box…
A: Given that hand-held shopping basket 62.0 cm long has a 1.86 kg carton of milk at one end, and a…
Q: A 2.0 kg , 20-cm-diameter turntable rotates at 130 rpm on frictionless bearings. Two 510 g blocks…
A: Write a given values of thus question. M=2kgω=130rpmm=510g=0.510kg Moment of inertia of 2kg rotating…
Q: A 30-kg child is sitting 5.0 m from the center of a 500-kg merry-go-round that is rotating…
A: Given Mass of child m=30kg Mass of merry-go round M=500kg Distance of child from centre r=5m…
Q: A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 30 cm diameter stone…
A: friction force=Normal Force(coefficient of static friction) friction force=Torque/r Torque=angular…
Q: The light right-angle boom which supports the 450-kg cylinder is supported by three cables and a…
A: Solution: The Reactions at O and cable tensions are calculated using below:
Q: A stone thrown horizontally from the top of a 24-m tower hits the ground at a point 18 m from the…
A: Given that:-Height of the tower : S =24 mThe stone hit the ground 18 m from the base of the…
Q: A block of mass m, 1.50 kg and a block of mass m₂ 5.60 kg are connected by a massless string over a…
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Q: During a bicep curl exercise, the biceps generate 800 N of force with a moment arm of 0.03 m. If the…
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Q: 1.0m 3.0m 0.5m mi m, PA N, 5. The drawing above shows two objects on a board supported at two…
A: Given, M1 = 40 kg M2 = 20 kg M3 = 10 kg We know g = 9.8 m/s2
Q: A 3,000‐pound car is sitting on a 12˚ slope. Find the magnitude of the force required to keep the…
A: Answer:- Given Mass(m) = 3000 pounds (1 pound = 0.454 kg) m =( 3000 × 0.454) kg = 1362 kg…
Q: A model airplane with mass 0.750-kg is tethered by a wire so that it flies in a circle of radius…
A: Given that Mass of the model airplane M = 0.750 kg Radius of the circular path in which plane is…
Q: Understanding the details of timing and forces in motion can improve the performance of athletes,…
A:
Q: Understanding the details of timing and forces in motion can improve the performance of athletes,…
A: Given: Weight of the dancer = 42 kg
Q: You have a horizontal grindstone (a disk) that is 95 kg, has a 0.36 m radius, is turning at 86 rpm…
A: The torque due to the frictional force is τ=r×f =rμN…
Q: When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in…
A: Along horizontal direction, Rsin15o=Tsinθ Along vertical direction,…
Q: Understanding the details of timing and forces in motion can improve the performance of athletes,…
A:
Q: If the velocity of the tip of the kicker’s shoe is 33.5 m/s and the hip joint is 1.25 m from the tip…
A:
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