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Isla Patrícia Loureiro Cassamo

Isla Patrícia L.

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Questions asked

INSTANT ANSWER

Um carro elétrico pesa 1000 N e desloca-se numa trajetória horizontal. Atinge uma velocidade máxima de 20 m/s quando o motor desenvolve a sua potência máxima 40 kW. Qual será a velocidade máxima do carro ao subir uma colina cuja inclinação é de 30◦ , considerando a força de atrito constante no movimento horizontal e inclinado?

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ANSWERED

Mkhitar Hobosyan verified

Numerade educator

A body of mass m is hung by a rope with negligible mass wrapped in a pulley of mass M and radius R, which can rotate without friction around its axis . Knowing that the moment of inertia of the pulley is I = MR2/2 and that the rope does not slip on the pulley, what is the magnitude of the tension, T, on the rope when the block is dropped?

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ANSWERED

Ankur S verified

Numerade educator

A ring of mass M and radius R can rotate around axis z1, which is perpendicular to the plane of the ring and passes through its edge. Knowing that the moment of inertia with respect to the parallel axis z passing through its center is equal to MR^2, what is the moment of inertia with respect to the z1 axis?

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Lien Le verified

Numerade educator

Consider that the particle has a mass m = 7/2 kg and is dropped at rest from x = 1/2 m. What is its speed at x = 0 m?

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Bradley Duda verified

Numerade educator

4*x-4*x^3=0

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ANSWERED

Sam Stansfield verified

Numerade educator

The potential energy of a particle is Ep(x) = 2x^2 − x^4 For what values of x is the particle in unstable equilibrium?

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ANSWERED

Nicholas Mogoi verified

Numerade educator

A block of mass m = 0.5 kg suffers a collision that gives it an initial horizontal speed of 6 m/s. The coefficient of kinetic friction between the block and the surface on which it slides is µc = 0.1. What is the work done by the friction force until the block stops?

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ANSWERED

Lien Le verified

Numerade educator

A body of mass m = 200 g is released from rest from a height h = 1 m. The body falls onto a spring with spring constant k = 24 N/m compressing it a distance y. The maximum value of y is

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Rachel Gore verified

Numerade educator

A small ball of mass m, initially at rest at A, slides without friction over a hemispherical surface of radius r (see figure). When the ball is at its lowest point, the force exerted by the surface is:

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ANSWERED

Supratim Pal verified

Numerade educator

An electric car weighs 1000 N and travels along a horizontal path. It reaches a maximum speed of 20 m/s when the motor develops its maximum power 40 kW. What will be the car's maximum speed as it climbs a 30° hill, assuming constant frictional force in horizontal and incline motion?

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