a 185 gram smartphone connected ti its charging cable is playfully whirled in a horizontal circle where it completes one revolution in 0.667 s. Its rotation is colckwise when viewd from the top. if the radius of the circular path is 78 cm, what are the magnitudes of te smartphones (a) tangential velocity and (b) centripetal force through the cable.

Q: A particle moves along a circular path of radius300 mm. If its angular velocity isθ = (3t2) rad/s,…

A: Given The radius of the circle is r=300 mm=300×10-3 m=0.3 m. The angle θ=45°×π180°=0.785 rad. The…

Q: A 50.0-kg child stands at the rim of a merry-go-round of radius 2.95 m, rotating with an angular…

A: a) The expression for find centripetal acceleration is ac=v2r=ωr2r=ω2r Insert values in the above…

Q: The formula v = 0.03 t can be used to calculate the tangential acceleration of an automobile moving…

A:

Q: A centrifuge in a medical laboratory rotates at an angularvelocity of 3 600 rev/min. When switched…

A: The final angular velocity is zero as the centrifuge stops.During the 50 revolutions, the centrifuge…

Q: One end of a cord is fixed and asmall 0.500-kg object is attached to theother end, where it swings…

A: Given that           v =8.0 m/s           r =2.0 m           θ= 20 deg           m =0.50 kg

Q: A stone with a mass of 0.5 kg is tied to a string 1.2 m long and is whirled in a vertical circle. If…

A: It is given that m=0.5 kgr=1.2 mT=20 N

Q: A wheel of radius R starts from rest and accelerates with a constant angular acceleration a about a…

A:

Q: A 1.3 kg rock is swung in a circular path and in a vertical plane on a 3.3 m length string. At the…

A:

Q: In a home laundry dryer, a cylindrical tub containing wetclothes is rotated steadily about a…

A: Given:Radius of tub (r) = 0.33 mClothes lose the contact with tub at an angle (θ) = 68ᵒ

Q: A weather satellite is to be placed in a circular orbit around the earth at an altitude of 300…

A:

Q: A ferris wheel with a 20 m radius and tangential speed of 4 m/s has all 70 kg of your ridingit. How…

A: The radius =20m  to find the normal force exerted on the top and the bottom

Q: A 1.1 kg rock is swung in a circular path and in a vertical plane on a 2.4 m length string. At the…

A: Given,mass of the rock, m = 1.1 kglength of the string, L = 2.4 mangular velocity of the rock, ω =…

Q: When a slice of buttered toast is accidentally pushed over the edge of a counter, it rotates as it…

A: The toast rotates at constant angular speed as it falls, and it falling with constant acceleration.…

Q: A 50.0-kg child stands at the rim of a merry-go-round of radius 2.00 m, rotating with an angular…

A: Given:  mass,m = 50 kg  radius, r =  2 m  angular speed, w = 3 rad/s

Q: What is the smallest radius R about which an automobile can turnwithout skidding at 100 km/h if μ =…

A: For not skidding, the centripetal force is balanced by the friction force.  μ m g =m v2R where, v is…

Q: A race car starts at rest and accelerates in a circular path (r = 500 m) to a speed of 35 m/s in 11…

A: Given : r = 500 m vi = 35 m/s t = 11 s vf = 15 m/s

Q: A metallic ball, tied to one end of a 2-meter string, executes uniform circular motion along a…

A: v=rω=r2πT=2 m2π0.5 s=25.12 m/s

Q: A turn has a radius of R and is banked at an angle theta so that on a perfectly icy (frictionless)…

A: Consider the FBD of the car on the frictionless banked road.

Q: A 1.6 kg rock is swung in a circular path and in a vertical plane on a 2.9 m length string. At the…

A:

Q: *A car of mass 1500kg and speed of 10 travels around a eircular turn with a radius of 50m without…

A: Solution (4): Given that m = 15 kg v = 10 m/s r = 50 m

Q: A rock is spun in a sling at a constant speed of 56.0 m/s. What rate of rotation, in rev/s, is…

A:

Q: One end of a cord is fixed and a small 0.550-kg object is attached to the other end, where it swings…

A: Given: Mass of object, m = 0.55 kg Radius, r = 1.5 m Angle, = 17 degree Speed of object, v = 6 m/s

Q: A 50.0-kg child stands at the rim of a merry-go-round of radius 2.85 m, rotating with an angular…

A: mass of child = 50 kg Radius = 2.85 m w ( angular speed) = 3.9 rad/sec

Q: A jet pilot takes his aircraft in a vertical loop , if the jet is moving at a speed of 1140 km/m ,…

A: Centripetal acceleration is a type of  acceleration in uniform circular motion. It direction is…

Q: The world's tallest Ferris wheel is the High Roller in Las Vegas, NV. It has a radius of about 79…

A: The given radius of the Ferris wheel is R = 79 m and the time of ride is given as t = 8 minute = 480…

Q: A hockey puck with mass 230 g is attached to a rope of length 49.0 cm and swung in a horizontal…

A: Given information:Mass of the hockey puck (m) = 230 g = 0.23 kgThe length of the rope (r) = 49 cm =…

Q: Hungarian Adrian Annus won the gold medal for thehammer throw at the 2004 Olympics in Athens with a…

A: v02g = 83.19          . . . . . Given v0 = 83.19×g v0 = 83.19×9.8 v0 = 28.55 m/s The relation…

Q: 5For the case of myoglobin, where mnet =4000 g/mole, how fast does a centrifuge have to spin before…

A: Step 1 2″N 2 πX15000 W= = 1570 rad/s   60 60   The bowl volume, V-b(1₂²-1²)   = π x…

Q: a stone tied to the end of a string 50cm long is whirled in a horizontal circle with constant speed…

A:

Q: Two Formula-one racing cars are negotiating a circular turn, and they have the same centripetal…

A: Given

Q: Consider that the car is making a flat circular curve with radius R = 230 m. Knowing that the…

A:

Q: This figure (lal = 24.0 m/s) represents the total acceleration of a particle moving clockwise in a…

A:

Q: What is the tangential velocity

A:

Q: A car, initially traveling at 17m/s has tires with a radius of 0.20m. If the brakes are capable of…

A: Given:- α= angular de-acceleration of the tires= 25.5 rad/s2 r= radius of tire= 0.2 m u= initial…

Q: A 1.3 kg rock is swung in a circular path and in a vertical plane on a 1 m length string. At the top…

A:

Q: A highway curve with radius R = 274 m is to be banked so that a car traveling v = 25.0 m/s will not…

A:

Q: A 1.3 kg rock is swung in a circular path and in a vertical plane on a 1 m length string. At the top…

A:

Q: How fast (in rpm) must a centrifuge rotate if a particle 8.50 cm from the axis of rotation is to…

A: Given:Radius of rotation, r = 8.5 cm = 0.085mAcceleration, a = 120000g m/s2

Q: At the instant shown, the 50-kg projectile travels in the vertical plane with a speed of v=40 m/s.…

A: Tangential direction force is defined as Ft=mat Here m is mass and at is tangential acceleration.…

Q: A 50.0-kg child stands at the rim of a merry-go-round of radius 3.00 m, rotating with an angular…

A:

Q: A 50.0-kg child stands at the rim of a merry-go-round of radius 2.85 m, rotating with an angular…

A: Given:Mass,m=50 kgRadius,r=2.85 mAngular Speed,ω=3.25 rad/s Now,(a) What is the child's centripetal…

Q: A manufacturer of CD-ROM drives claims that the player can spin the disc as frequently as 1100…

A:

Q: In uniform circular motion, the net force is perpendicular to the velocity and changes the direction…

A:

Q: Two Formula-one racing cars are negotiating a circular turn, and they have the same centripetal…

A: Given: Centripetal acceleration of both the car is same radius of path of car A, RA = 48 m  radius…

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.